Ejecting device for breakdown guns



(N0 Model.)

Patented Dec. I3, I898. W. H. DAVENPORT.

EJECTING DEVICE FOR BREAKDOWN GUNS.

(Application filed Feb. 15, 1898.)

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No. 6l5,958. Patented Dec. l3, I898. W. H. DAVENPORT.

EJECTING DEVICE FOR BREAKDOWN GUNS.

(Application filed Feb. 15, 1898.) (No Model.)

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UNITED STATES ATENT Fries.

\VILLIAM H. DAVENPORT, OFNORVVIOH, CONNECTIGUT.'

EJECTING DEVICE FOR BREAK DOWN GUNS.

SPECIFICATION forming part of Letters Patent No. 615,958, dated December13, 1898.

Application filed February 15, 1898. Serial No. 670,357. (No model.)

To (tZZ whom it may concern:

Be it known that I, \VILLIAM H. DAVEN- PORT, a citizen of the UnitedStates of America, and a resident of Norwich, in the county of NewLondon and State of Connecticut, have invented certain new and usefulImprovements in Shell-Ejecting Devices for Breakdown Guns, of which thefollowing is a specification, reference being hadto the accompanyingdrawings, and to letters of reference marked thereon, which form a partof this specification.

In my present shell-ejecting device the object I have had in view is toprovide breakdown guns with a more efficient shell-ejecting mechanism inwhich the device is less liable to become inoperative, while the cost ofthe same is materially reduced as compared with shell-ejecting meansheretofore devised.

To that end the invention consists in the novel features of constructionhereinafter fully set forth and claimed.

Some of the specific advantages possessed by the invention forming thesubject of my application for United States Letters Patent are asfollows: The barrel-lug is not cut away, as common to manyshell-ejecting devices, but is simply drilled to receive the variousparts. The forward end of the frame is whole and forms a seat for thebarrel. The hingejoint pin is enlarged and provided with a longitudinalgroove terminating in a short spiral groove, whereby, in connection witha fixed pin extending into the groove, the joint-pin may be forced intoor from its' seat. The joint-pin is also provided with a cam-shapedgroove adapted upon breaking down the gun to trip the spring-pressedejector, thereby releasing the latter and permitting it to forciblythrow the shell from the barrel, and owing to the novel construction ofthe frame, &c., the barrel may be readily detached from the gun withoutremoving the fore-wood.

In the accompanying two sheets of drawings, Figure 1 is a sideelevation, in reduced scale, of a breech-loading shotgun embodying myimprovement. Fig. 2 is a side elevation, in partial longitudinal centralsection, enlarged, showing the construction of the rear part of thebarrel and the corresponding portion of the frame, the parts being inthe normal or closed position. Fig. 3 is a similar view showing thebarrel tipped or open and the shell-ejecting device tripped or released.Fig. 4. is a plan view of the forward portion of the frame. Fig. 5 is aperspective View of the joint-pin. Fig. 6 is a side View of theejector-spindle. Fig. 7 is a longitudinal central section of the same.Fig. 8 is a sectional view of the tripping device considerably enlarged.Fig. 9 is a side view of the trippingpin. Fig. 10 is a similar view ofthe ejectorspring, and Fig. 11 shows the spring for retracting thetripping-pin.

In my present improved firearm the several principal members thereof, aswell as the looking and firing devices, are or may be constructedsubstantially as usual, except in so far as they may be modified oradapted to the shell-ejecting mechanism forming the subject of thisinvention.

The barrel b is counterbored at its rear end to receive the shell orcartridge g. It is provided on its under side with the barrel-lug b, inwhich is mounted the shell-ejecting device. The lug is also adapted toreceive the forward end of the locking-bolt m, which in turn is arrangedto be controlled by the top lever m, &c., as usual.

The forward end portion of the frame memher a is well rounded andwholethat is, it is not cut through longitudinally for the passage ofthe barrel-lug, &c., in order that the gun may be taken apart. Thecenter of said end is drilled through transversely to receive the largejoint-pin p, the arrangement being such that in the portion of the pincontiguous to the barrel-lug the latter is in engagement with thesemicircumference of the pin. The joint-pin 19 has alongitudinally-extending groove 19 therein, the same terminating at ornear the head hin ashort spiral groove 19 After the joint-pin isinserted in the frame the end of a small screw or pin 1" is introducedinto the groove, the pin itself being mounted in the frame, as shown inFig. 4:. As thus arranged the joint-pin cannot be wholly withdrawn fromthe frame, ah though it is adapted to slide endwise through the lug b topermit the ready removal of the barrel from the frame. The head of thejoint-pin is provided with a short external arm 7t, by means of whichthe pin is manipw.

lated. It also forms a convenient lever for axially turning the pin, asin' forcing the latter to and from its seat, the spiral part of thegroove in such case coacting with the pin 1' in a manner analogous to awedge action, thereby preventing the joint-pin from being accidentallyunseated when in use. It will be seen that the inner or rear side of thejoint-pin is cut away at 'rto form a camshaped surface, against whichthe forward end of the trip for the shell-ejecting device bears. Thejointpin, it may be stated, is normally stationary with the frame, thebarrel being pivoted so as to swing on the pin.

The barrel-lug is drilled longitudinally at right angles to the axis ofthe joint-pin to receive the end wise-movable ejector-spindle c, &c.This spindle member is also drilled longitudinally at its forward end atc to freely receive the movable tripping-pin d, the latfor being pressedat its rear end by a small spring .9 seated in the bottom of the hole aformed in the spindle, the latter hole being a continuation of the hole0 just referred to. The forward portion d of the tripping-pin d isreduced in diameter. It extends through the lug b and is in continuousengagement with the side of the joint-pin, or, rather, the cam-shapedportion r of it. The opposite or rear end portion d of the pin cl isenlarged and beveled at d the pin being kept in yielding contact withthe member p by means of the spring 3 before described.

The forward end of the ejector-spindle c bears against theejector-spring s, seated in the barrel-lug and surrounding thecorresponding part of the tripping-pin. This spring is employed toforcibly eject the shell 9 from the barrel 1). The rear end of themember 0' has a head 0 let into the barrel and lug and is adapted toreceive the rim of the shell, as usual in devices of this class. Theunder side of the spindle c is flattened at 0 thus forming endshoulders, which coact with the usual stop pin or screw f to limit theendwise movements of the spindle. At a point forward of the saidflattened portion a notch n is formed in the member 0, arranged toreceive the beveled upper end of a vertically movable latch e, thelatter being maintained in yielding engagement with the spindle cbymeans of a light spring 6*, the whole kept in place by the shortscrew-plug 6 mounted in the. barrel-lug. In order to prevent the latchfrom turning axially, it is provided with a guide-pin e adapted to slidefreely in a vertical groove formed in the lug. 3, and 8.)

The operation of the shell-ejecting device is substantially as follows:Assuming the several parts of the mechanism to be in the normal positionshown in Fig. 2, the gun then being closed, it will be seen that thespring 8 is compressed, the latch e at the same time being in theholding-notch n of the spindle, while the forward end of thetripping-pin d extends through the barrel-lug and is in en- (See Figs.2,

gagement with the cam-groove r of the joint- I pin. In this position theejector-spindle is locked and can be made operative only by firstwithdrawing or depressing the latch. This is effected as follows: Theact of opening or breaking down the gun gradually elevatesthe rear endof the barrel,since it swings on the stationary pivot or joint pin 19,thereby forcing the tripping-pin d rearwardly through the medium of thecam r. The construction and relative arrangement of the parts are suchthat at or about the instant the end of the barrel rises above the topof the frame a the beveled end d of the pin d will slide over the end ofthe latch 6, thereby forcing the latter from the notch n and trippingthe spindle, at which instant, too, the thus suddenlyreleased spring 8quickly forcesthe spindle rearwardly to its limit and ejects the emptyshell from the barrel.- Fig. 3 shows the corresponding or open positionof the gun.

In my present invention the front end of the frame a is cut awayslightly on top at M, Fig. 2, forward of the pivot, so as to allow thebarrel to be tilted. The fore-wood k is fast to the barrel and need notbe detached therefrom in order to remove the barrel from the frame. Thejoint-pin is operated by first pressing the lever h thereof downwardlyan angular distance equal to the length of the spirally-grooved portion13 thereby forcing the pin outwardly a corresponding distance andforcing it from its seat, after which the joint-pin is easily movedendwise, guided by the small pin r, until its opposite end h is sub- IOOstantially flush with the inner Wall a of the frame. In this position ofthe joint-pin the barrel may be readily introduced into or removed fromthe frame. In the latter case the barrel is simply moved forward a shortdistance,followed by lifting it bodily from the frame.

The tripping-pin cl may consist of two parts,

one being screwed into the other, as shown at d in Fig. 9, therebyadapting the pin to be readily adjusted, if desired.

cam which remains stationary when the gun is broken down, substantiallyas shown.

2. In a breakdown gun, the frame having its forward end practicallyclosed, the barrel member having a lug on its under side, and

a joint-pin passing transversely through said frame, and bearing againstthe front end of the barrel-lug, combined with means for limiting theendwise movement of the joint-pin, whereby said pin can be drawnoutwardly sufficiently far to allow the barrel to be removed andreplaced without the removal of the pin, substantially as described.

3. In a breakdown gun, the combination with the frame and barrel membersfitted to each other, of a suitably-headed joint-pin 19 passingtransversely through the frame and forming a pivot for the barrel, thejoint-pin being grooved longitudinally and ending in a spiral orinclined groove, and a fixed pin 0* in engagement with said groove,whereby axial movement of the pin in the proper direction forces the pinto its seat or unseats it, substantially as described.

4. In a breakdown gun, the combination of the frame a having its forwardend rounded and practically closed, the barrel I) having a lug b on itsunder side and contained within the frame, the fore-stock secured to thebarrel and conforming to the said end of the frame, and the joint-pin 13passing transversely through the center of the frame end and fitted tothe forward end of the barrellug, the said pin being groovedlongitudinally, combined with a stop-pin which catches in the groove,whereby upon withdrawing the joint-pin the barrel may be introduced intoor removed from the frame without detaching the fore-stock from thebarrel.

5. In a breakdown gun, the combination with the frame a having itsforward end closed, of the barrel 1) having secured to its under side alug b and fore-stock 7c, and the joint-pin seated in said frame and lugand having an endwise movement, and means to limit this movement,whereby upon withdrawing the j oint-pin the barrel may be readilyintroduced into orremoved from the frame without detaching thefore-stock, substantially as described.

6. In a shell-ejecting device mounted in the barrel-lug of a breakdowngun, the combination with the normally stationary joint-pin providedwith a cam-shaped portion or groove, r, of a tripping-pin, forming apart of the shell-ejecting mechanism,in engagement with said cam wherebyupon tilting the barrel the tripping-pin is forced rearwardly,substantially as described and for the purpose set forth.

7. A notched spring-pressed ejector-spindle, mounted in the barrel-lugand provided with notches or recesses in its under side, and having anopening in its front end, a spring placed in said opening and atripping-pin which has its front end to enter said spindle, combinedwith a spring placed in the barrellug and which bears against the frontend of the spindle, a joint-pin having a suitable cutaway portion, a camformed therewith and against which the front end of the trippingpinengages, and a latch for engaging with the spindle and which is operatedby the pin, substantially as shown.

8. In a shell-ejecting device for breakdown guns, the combination of aspring-pressed spindle 0 provided with a notch n, a yielding latchnormally engaging said notch for keeping the spindle in the retracted orclosed position, a spring-pressed tripping-pin slidable in the spindlehaving its rear end normally forward of the spindle-notch, and means forforcing the tripping-pin rearwardly upon tilting the gun barrel, wherebysaid latch is forced from the notch, thus releasing the spindle andejecting the shell, substantially as described.

Signed by me, at Providence, Rhode Island, this 7th day of February, A.D. 1898.

WILLIAM H. DAVENPORT.

IVitnesses:

GEO. H. REMINGTON, CHAS. O. REMINGTON.

